Finding the Fourth Proportional to 30,460, 42,040.56 and 17,212

Step by Step Solution

1. Step 1: Write the proportion equation
   30,460 : 42,040.56 = 17,212 : x
2. Step 2: Convert to fraction form
   30,460/42,040.56 = 17,212/x
3. Step 3: Cross multiply
   30,460x = 42,040.56 × 17,212
4. Step 4: Simplify right side
   30,460x = 723,602,118.72
5. Step 5: Solve for x
   x = 723,602,118.72/30,460
6. Step 6: Final answer
   x = 23,755.81